Malicious PDF — malware analysis report

Static analysis result for SHA-256 80880e0d59a8682c…

MALICIOUS

PDF

73.1 KB Created: 2021-04-12 00:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: fb474adadfd95b79b9bf29f87b5f34c3 SHA-1: 2503451465b667111c1f2c2b74b82ae6d9936b88 SHA-256: 80880e0d59a8682c84ea49d59bb23cc6021ab37e199a9e88bad0765f67b62b64
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mezovuduw.ru/strik?utm_term=bose+awrc-1g+remote PDF link annotation
    • https://cdn.sqhk.co/feziwetesene/cbhjG7M/jibonulinijero.pdfIn PDF document text
    • http://4d-5d.com/panomidarinepewafedodobee6hnm.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/pixma_mg3520_setupe0pzy.pdfIn PDF document text
    • https://cdn.sqhk.co/nenutipu/Ijfhfm5/injustice_2_full_roster.pdfIn PDF document text
    • http://gelchlen.fun/the_odyssey_emily_wilsonfa1i3.pdfIn PDF document text
    • http://bijakolonan.iblogger.org/40421820924.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/lXPiihj/dopulijajanowekuni.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/zicDOj8/33485281120.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/i7jjijJ/dollar_deals_and_party_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/BshbKhc/jaruzenuxemujibaxavijivu.pdfIn PDF document text
    • http://tramlaweq.online/keurig_2.0_k450_single_serve_brewernvyvw.pdfIn PDF document text
    • http://slmit.fun/gurijulfb5j5.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/hcghmRO/beat_a_dead_horse_phrases.pdfIn PDF document text
    • https://cdn.sqhk.co/zesozote/geahdg5/25405546370.pdfIn PDF document text
    • http://inostrana.com/how_to_reset_air_conditioner_remote_control_daikinkkpi7.pdfIn PDF document text
    • http://wersita.fun/javogobeduvaredenefolk0qub.pdfIn PDF document text
    • http://kamini33.ru/mitorafn5vi0.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/idw6HSS/20278592679.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/Ajd9ckQ/usanetwork_activate_nbcu.pdfIn PDF document text
    • https://cdn.sqhk.co/xomatujod/etjihcf/6692370477.pdfIn PDF document text
    • http://mestorating.ru/sokosizukarisatosuvazabot4nqiu.pdfIn PDF document text
    • http://delifeschool.com/jewajuvokuj4lpt6.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/jjfoidH/star_wars_rebels_cast_fenn_rau.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guzupuxidulijak.rf.gd/zojirushi_travel_mug_made_in_japan.pdfIn PDF document text
    • http://vosoziwidusetur.rf.gd/country_through_which_equator_and_tropic_of_cancer_passes.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB8 5312 bytes
SHA-256: df21e2d4090d5da00af03fc78850438c4f70a594a27d421cb86949abb8d784f8
font_01_sfnt_off0000eed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED8 11428 bytes
SHA-256: d2186c34cee2f6179637b0a2ea40a29ad51f452cbce0d9d473684846de681941

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